Insect feeding on buckwheat flower.
Small insect, 1/4 inch long, feeding.
I'm pretty sure this is it. I based my ID on this link:
The Prodoxidae are a family of moths, generally small in size and nondescript in appearance. They include species of moderate pest status, such as the currant shoot borer, and others of considerable ecological and evolutionary interest, such as various species of "Yucca Moths".